本文選題：三維石墨烯　切入點：多孔石墨烯　出處：《海南大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：電化學(xué)生物傳感器作為一種快速高效的檢測手段在小型化方面具有獨特的優(yōu)勢。用電化學(xué)傳感器檢測一些常用的健康指標(biāo)將給不論是日常生活還是醫(yī)療診斷都具有十分積極的意義。酶因為其優(yōu)異的選擇性和高效的催化過程而被用作電化學(xué)傳感器的制作。但是酶需要一種擁有優(yōu)良導(dǎo)電性、較強負(fù)載能力和電化學(xué)催化性能的材料作為基底材料。石墨烯作為一種新型的二維納米材料,其優(yōu)異的電學(xué)和化學(xué)性質(zhì)在電化學(xué)傳感器中有廣泛的用途。但是石墨烯本身易團(tuán)聚的特性降低了表面積和催化性能,限制了其在酶電極材料中的應(yīng)用。本文的第一部分通過低溫常壓微波的方法,在石墨烯片層間嵌入聚吡咯(PPy)形成三維結(jié)構(gòu)的PPy/石墨烯復(fù)合物。得到的產(chǎn)物具有良好的電化學(xué)催化活性和較大的表面,在非酶多巴胺傳感中得到了不錯的性能。在往電極上修飾酶后,制得的酶電極對葡萄糖有良好的響應(yīng)并獲得了較好的靈敏度。本文第二部分介紹了在三維石墨烯的基礎(chǔ)上用氧化鐵刻蝕石墨烯片層得到分級的多孔結(jié)構(gòu)。獲得的多孔石墨烯由于孔結(jié)構(gòu)和邊緣位點的存在獲得了優(yōu)異的催化活性和對物質(zhì)良好的擴散能力,用其修飾的電極對多巴胺具有較好的響應(yīng)。修飾酶之后制得的電極對葡萄糖的響應(yīng)較為出色,可用作性能良好的葡萄糖酶傳感器。
[Abstract]:Electrochemical biosensor as a rapid and efficient detection method has unique advantages in miniaturization. The detection of some commonly used health indicators by electrochemical sensors will be useful for both daily life and medical diagnosis. It's very positive. Enzymes are used as electrochemical sensors because of their excellent selectivity and high efficiency in catalytic processes. Graphene is a new kind of two-dimensional nanomaterials. Its excellent electrical and chemical properties have a wide range of applications in electrochemical sensors, but the agglomeration of graphene itself reduces the surface area and catalytic performance. In the first part of this paper, the method of microwave at low temperature and atmospheric pressure is used. The PPy/ graphene complex with three dimensional structure was formed by intercalating polypyrrole pyrrolidine into the graphene lamellar. The obtained product has good electrochemical catalytic activity and larger surface. Good performance in non-enzymatic dopamine sensing. After modifying the enzyme at the electrode, The enzyme electrode has good response to glucose and good sensitivity. In the second part of this paper, the graded porous structure is obtained by etching graphene layer with iron oxide on the basis of three-dimensional graphene. Because of the existence of pore structure and edge sites, porous graphene has excellent catalytic activity and good diffusion ability to substances. The modified electrode has a better response to dopamine, and the modified electrode has a better response to glucose, which can be used as a glucose enzyme sensor with good performance.
【學(xué)位授予單位】：海南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：Q814.2;O657.1

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